State Street SPDR Bloomberg 1-3 Month T-Bill ETF (BIL)'s 30-day implied volatility (IV30) was 1.1% at the close on November 4, 2026, against a 52-week range of 0.7% to 3.5%. Its 20-day historical volatility was 0.3%.
Key numbers
30-day implied volatility (IV30): 1.1%
IV30 52-week range: 0.7% to 3.5% (median 1.2%)
Historical volatility: 20-day 0.3%, 1-year 0.3%
Implied move by the nearest expiration: ±0.1%
Data as of November 4, 2026.
BIL Implied Volatility (IV) vs Historical Volatility (HV)
The BIL IV term structure shows the implied volatility difference between different maturity dates.
